Bow shuttle



March 6, 1951 D. B. LEASE BOW SHUTTLE Filed Jan. 14, 1949 INVENTOR.

DELBERT a. LEASE j MM A ATTORNEYS Patented Mar. 6, 1951 BOW SHUTTLEDelbert B. Lease, Ridge-ley, W. Va., assignor to Celanese Corporation ofAmerica, a corporation of Delaware Application January 14, 1949, SerialNo. 70,934 1 2 Claims.

This invention relates to shuttles, and relates more particularly toshuttles employed in the weaving of narrow fabrics.

As is well known, in weaving narrow fabrics such as ribbons, it iscustomary to employ shuttles in which the yarn leaves the shuttlethrough guide means positioned centrally of the ends of able for weavingsomewhat wider fabrics ranging frcm'about 3 to 6 inches in width.Duringthe weaving of these latter-fabrics, the inertia developed in therotating bobbin as the yarn is drawn therefrom causes an excess of yarn,of

varying amount, to be unwound from the bobbin with the result that thedelivery of yarn is irregular producing a defective fabric. Moreoverparallel wound bobbins are difficult to wind and are easily damagedduring handling.

It is an important obiect of this invention to provide a shuttle whichwill be free from the foregoing and other disadvantages of the priorshuttles and which will be especially simple in construction andefficient in operation.

A further object of this invention is the provision of a shuttle adaptedfor the weaving of narrow fabrics, in which the yarn leaves the shuttlethrough guide means po itioned centrally of the ends of the shuttle andin which the yarn is drawn over the end of the filling bobbin.

Another obiect of this invention is the provision of a shuttle adaptedfor the weaving of narrow fabrics, in which a cross-wound package ofyarn may be employed as the filling bobbin.

Other obiects of this invention, together with certain details of contruction and combinations of parts, will be apparent from the followingdetailed description and claims.

I have now discovered that the difficulties experienced in weavingnarrow fabrics ranging from about 3 to 6 inches in width may be overcomeby providing a shuttle in which the yarn leaves the shuttle throughguide means located centrally of the ends of the shuttle, and in whichthe yarn is drawn over the end of the filling bobbin. This not onlyeliminates the irregular delivery of the yarn frequently encounteredwhen employing a rotating bobbin, but also permits cross-wound fillingbobbins to be employed, such bobbins being Wound more readily, and beingless likely to be damaged during handling.

A preferred embodiment of this invention isillustrated in theaccompanying drawing, in which Fig. 1 is a side elevation of the shuttlewitha filling bobbin mounted therein, 1

Fig. 2 is a view in section, on the line 2 2 of Fig. 1 in the directionof the arrows, showing the manner in which the filling bobbin is mountedin the shuttle, and

Fig. 3 is a detail sectional View, onan enlarged scale, taken on line3-3 of Fig. 1 in the direction of the arrows, showing themanner inwhichthe bobbin support is mounted in the shuttle. Referring now to thedrawingthe reference -numeral H! designates the shuttle body whichis-pror :vided with conventional bumpers II and which has an aperture 52extending therethrough. Po-

sitioned at one side of the aperture 12 is a supporting rod. 13, whichis threaded at its lower end into an aperture l4 and which extends atits upper end through an aperture [5 in the shuttle body.

A bobbin support, indicated generally by reference numeral It, ismounted in the aperture 12. The bobbin support is provided with aU-shaped opening I! in hub l8 thereof for pivotal engagement with thesupporting rod IS. The bobbin support i6 is held in position by means ofa spring !9 which encircles the supporting rod I3 and which is providedat its upper end with a hook 2! that engages neck 22 of said bobbinsupport. The lower end of the spring i9 is provided with an extension 23adapted to be held within an aperture 24 in a collar 25 adjustablyfastened to the supporting rod I3 by means of a set screw 26, permittingthe tension in said spring to be varied over a wide range. The torqueexerted by the spring IS on the bobbin support Iii tends to rotate saidbobbin support about the supporting rod l3 as an axis. To limit theextent of such rotation and to hold the bobbin support It? parallel toan axis extending along the length of the shuttle body Is, there isprovided an abutment 21 on the hub 18, which abutment engages a pin 28carried by a collar 29 adjustably fastened to the supporting rod l3 bymeans of a set screw 3|.

The bobbin support It is divided into two sections 32 and 33 by means ofa slot 35, and one of said sections is sprung away from the other sothat the diameter of the bobbin support increases gradually towards itsfree end. A filling bobbin, indicated generally by the reference numeral35, and. comprising a yarn support 36 and a cross-wound yarn winding 31,is mounted centrally of the. shuttle body it? on the bobbin support I 6with its end abutting a flange 38 on said bobbin support, and with thesections 32 and 33 yieldably engaging the inside of yarn support 36 tohold the filling bobbin 35 in position. Yarn 39 is drawn from thefilling bobbin 35 over the end thereof and passes successively throughguide means such as a guide eye 4! positioned axially of said fillingbobbin andthen through a guide 42 positioned centrally of the ends ofthe shuttle.

The spring mounting of the bobbin support l6 permits said bobbin supportto be moved to the position shown in dot-dash lines in Fig. 2 of thedrawing for the replacement of the filling bobbin 35 when necessary.

While the shuttle of this invention has been described with particularreference to the weaving of narrow fabrics ranging from about 3 to 6inches in width, to which it is especially adapted, it will beappreciated that it may also be employed for weaving narrower or widerfabrics.

It is to be understood that the foregoing detailed description is givenmerely by way of illustration and that many variations may be madetherein without departing from the spirit of my invention.

Having described my invention, what I desire to secure by Letters Patentis:

1. A shuttle comprising in combination with a shuttle body having anaperture extending therethrough, a supporting rod positioned in saidaperture, a bobbin support for carrying a filling bobbin pivotallyengaged with said supporting rod, adjustable stop means carried by saidsupporting rod and cooperatingwith said bobbin support for holding saidbobbin support parallel to an axis extending along the length of saidshuttle body, guide means positioned centrally of the ends of saidshuttle body for guiding the yarn as it leaves said shuttle, and meansfor 4 guiding the yarn over the end of said filling bobbin on its way tosaid centrally positioned guide means.

2. A shuttle comprising in combination with a. shuttle body having acentrally located aperture extending therethrough of a supporting rodpositioned at one side of said aperture, a bobbin support for carrying afilling bobbin centrally of said shuttle body pivotally engaged withsaid supporting rod, spring means encircling said supporting rod andyieldably holding said bobbin support in engagement with said supportingrod, adjustable stop means carried by said supporting rod andcooperating with said bobbin support for holding said bobbin supportparallel to an axis extending along the length of said shuttle body,guide means positioned centrally of the end .of said shuttle body forguiding the yarn as it leaves said shuttle, and means positioned axiallyof said filling bobbin for guiding the yarn over the end of said fillingbobbin on its way to said centrally positioned guide means.

DELBERT B. LEASE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

